Fossil/Extinct Animal - Hagerman Horse(Equus Simplicidens)


The Hagerman Horse scientifically known as the Equus Simplicidens is an extinct species that is believed to be similar to the Zebra, it was found in Hagerman, Idaho. The fossil was discovered in 1982 and is a Northern American species of Equid from the Pliocene and Pleistocene times.
external image Equus_simplicidens_mounted_02.jpg

Basic Information

Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Perissodactyla
Family: Equidae
Genus: Equus
Species: Equus Simplicidens


Habitat

The Hagerman Horse was believed to have lived in warm humid grassland parts of East Africa. The Hagerman Horse needed water to travel and survive. During the Pliocene period the weather was warm and dry, the temperature was high all the time causing the Hagerman Horse needing to live close by water for it to have enough water to survive.
external image Eastern_Africa_location_map.png

Behavior Adaptations 1

The Hagerman Horse probably did not been as gentle and tame as the Zebra, they would probably attack and try to kill their predators since their meat and skin were hunted at that time period. Since they were hunted and attacked, their behavior will be different from the Zebra which are not hunted as much and will behave more viciously.

Behavior Adaptations 2

The way the Hagerman Horse travels differs from the Zebra, the Zebra travel in large herds while the Hagerman Horse travels in smaller herds trying to avoid the predators, since travelling in large herds will cause attention to themselves. The way the Hagerman Horse mates may also be different from the Zebra, since travelling in a herd may cause attention they will not be able to protect a big herd of female and will not be sure to mate with all of them. It probably will only protect one single female and mated with it.

Structural Adaptation 1

The Hagerman Horse differs from the Plains Zebra by only having stripes on the head, neck, legs and back of its body only. The stripes are brownish instead of white in its upper body. In the middle part of its body the stripes slowly fades and the stripes become more wider, the rear parts were fully brown instead of striped.

Structural Adaptation 2

The Hagerman Horse like the Plains Zebra has a big wide long body and short thin legs, it has big sharp ears for it to spot and notice predators easier and know when to escape. The males and females both weigh around the same and have around the same length approximately 2meters long and 1meter high. Both weigh around 380kg.
external image Equus_Simplicidens.jpg

Physiological Adaptations

The Hagerman Horse has a big digestive system allowing them to store enough food to travel for a long distance like the camels. It has strong teeths allowing it to chew and feed on any type of grasses. It only eats grass because it is easy to digest and they wont need to hibernate, the need a large amount of food for them to travel longer distances, meat is limited but there are large amounts of grasses.

Bibliography

Wikipedia, Hagerman Horse. Retrieved 25th July from http://en.wikipedia.org/wiki/Hagerman_Horse
National Park Service, Hagerman Fossil Beds National Monument. Retrieved 26th July from http://www.nps.gov/archive/hafo/quarry.htm
Idaho State Fossil, Hagerman Horse. Retrieved 26th July from http://www.statefossils.com/id/id.html